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Water Compatible Direct (Hetero)arylation Polymerization of PPDT2FBT: A Pathway Towards Large‐Scale Production of Organic Solar Cells
Asian Journal of Organic Chemistry ( IF 2.7 ) Pub Date : 2020-06-10 , DOI: 10.1002/ajoc.202000231
Mathieu Mainville 1 , Vicky Tremblay 1 , Miriam Z. Fenniri 1 , Audrey Laventure 2 , Mahmoud E. Farahat 2 , Ryan Ambrose 3 , Gregory C. Welch 2 , Ian G. Hill 3 , Mario Leclerc 1
Affiliation  

The interest in organic solar cells (OSCs) has grown exponentially over the last few years and devices are approaching a symbolic power conversion efficiency (PCE) of 20%. However, many challenges related to scaling‐up several processes must be addressed before this technology can reach the production scale. In order to facilitate the scaled‐up production of OSCs, the synthesis of an efficient and cost‐effective conjugated polymer, PPDT2FBT, was adapted to a water‐based method of direct (hetero)arylation polymerization (DHAP). This aqueous DHAP method yields molecular weights (Mn) between 20 and 80 kg mol−1, which can be controlled by manipulating the polymerization time and temperature. The varying polymer molecular weights were used for the fabrication of OSCs with PC61BM and air‐processed in non‐halogenated solvents. When the 40 kg mol−1 PPDT2FBT:PC61BM active layer is slot‐die coated, PCEs of 8.15% were attained under standard one sun illumination. The temporal stability of the devices under constant illumination showed a 80% PCE loss after 220 hours (TS80), after the initial ‘‘burn‐in’’.

中文翻译:

与水相容的PPDT2FBT直接(杂)芳基聚合:通往有机太阳能电池大规模生产的途径

在过去的几年中,对有机太阳能电池(OSC)的兴趣成倍增长,并且设备的符号功率转换效率(PCE)接近20%。但是,在这项技术达到生产规模之前,必须解决与扩大多个流程有关的许多挑战。为了促进大规模生产OSC,将高效且经济高效的共轭聚合物PPDT2FBT的合成方法应用于基于水的直接(杂)芳基化聚合(DHAP)方法。该含水DHAP方法产生的分子量(M n)为20至80kg mol -1,其可通过控制聚合时间和温度来控制。各种分子量的聚合物被用于用PC 61制备OSCBM,并在非卤代溶剂中进行空气处理。当40 kg mol -1 PPDT2FBT:PC 61 BM活性层进行狭缝模压涂布时,在标准的一处阳光照射下,PCE达到8.15%。在最初的“老化”之后,在恒定照明下的设备的时间稳定性显示220小时(T S80)后PCE损失80%。
更新日期:2020-06-10
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